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buyModerate cluster of 2

Joseph P Campanelli bought $49k of NBBK

President & CEO at NB Bancorp, Inc.. 2,500 shares at an average of $19.45, traded Apr 24, 2026, filed Apr 27, 2026.

Conviction score
40
Value
$49k
2,500 shares
Holdings after
374,790
+1% from before
From 52-week low
+25%
low $15.79, close $19.69
From 52-week high
-12%
high $22.49, as of Apr 24, 2026

Score components

  • Role
    CEO
    +25
  • Trade size
    $49k at market
    +7
  • Relative to holdings
    Under 1% of holdings (0.7%)
    -5
  • Price context
    Near the top of the 52-week range
    0
  • Cluster
    2 insiders buying within 14 days
    +8
  • Repeat buying
    4 buys in 90 days
    +5
  • Track record
    Too few past buys to judge (0 with prices)
    0

What happened after comparable buys

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +1.4%, 3m +13.3%, 6m -.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

NBBKOct 12, 2026 · close 22.34
Since filing Apr 27, 2026: +13.2%SPY +9.3% · excess +3.8%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001437749-26-013440, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Apr 24, 2026FTax withholding
Common Stock
-24,371$19.82$483k372,290Apr 27, 2026
Apr 24, 2026POpen-market purchase
Common Stock
+320$19.33$6,186372,610Apr 27, 2026
Apr 24, 2026POpen-market purchase
Common Stock
+180$19.34$3,481372,790Apr 27, 2026
Apr 24, 2026POpen-market purchase
Common Stock
+500$19.37$9,685373,290Apr 27, 2026
Apr 24, 2026POpen-market purchase
Common Stock
+722$19.45$14k374,012Apr 27, 2026
Apr 24, 2026POpen-market purchase
Common Stock
+178$19.46$3,464374,190Apr 27, 2026
Apr 24, 2026POpen-market purchase
Common Stock
+100$19.47$1,947374,290Apr 27, 2026
Apr 24, 2026POpen-market purchase
Common Stock
+500$19.63$9,813374,790Apr 27, 2026

Related signals

Other insiders at NB Bancorp, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
29Weak
NBBKbuy 2
NB Bancorp, Inc.
Joseph P Campanelli
President & CEO
$44k
2,000 shares
+1%
25Weak
NBBKbuy 2
NB Bancorp, Inc.
Jean-Pierre Lapointe
SEVP and CFO
$4,360
200 shares
+0%
26Weak
NBBKsell
NB Bancorp, Inc.
Kevin Henkin
EVP, Chief Credit Officer
$46k
2,000 shares
-23%
36Weak
NBBKbuy
NB Bancorp, Inc.
Joseph P Campanelli
President & CEO
$58k
3,000 shares
+1%
42Moderate
NBBKbuy 2
NB Bancorp, Inc.
Hope Pascucci
director
$389k
20,000 shares
+16%
46Moderate
NBBKbuy 2
NB Bancorp, Inc.
Joseph P Campanelli
President & CEO
$104k
5,000 shares
+11%
40Moderate
NBBKbuy 2
NB Bancorp, Inc.
Joseph P Campanelli
President & CEO
$50k
2,500 shares
+1%
46Moderate
NBBKbuy 2
NB Bancorp, Inc.
Joseph P Campanelli
President & CEO
$104k
5,000 shares
+11%
25Weak
NBBKbuy 2
NB Bancorp, Inc.
Jean-Pierre Lapointe
SEVP and CFO
$20k
1,000 shares
+1%
30Weak
NBBKbuy
NB Bancorp, Inc.
Mary Susan Elliott
director
$218k
11,434 shares
+11%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Joseph P Campanelli bought $49k of NBBK | InsiderTell